Dense fog is common over the Cape Cod Bay and offshore islands. The best time to visit Massachusetts is from May in late spring to mid-autumn in October. Temperatures are warm by mid-May, with a marked decrease in storm activities. Summers are warm and beautiful on the seaside as well as the mountains. Numerous state parks, inland waterways, and coastal beaches attract the maximum number of tourists during the pleasant summer weather. Autumn is colorful and draws crowds from all over the United States.
The worst time to visit Massachusetts is from November to February , when the weather is severely cold. Cold fronts are frequent, and the first of the snowstorms usually occur by November. The resulting accumulation of snow taxes the snow plows and the state to the hilt.
Mountain trails and state parks close for the winter as chilly winds and massive snow act as significant barriers. Roads are slippery and icy and even shut down in case of massive snow accumulation.
Winter days are short, and the skies are often gloomy in the absence of intense sunshine. Winter is a treat for snow lovers. Massachusetts is prone to wildfires, thunderstorms, hurricanes, floods, droughts, and snowstorms. Thunderstorms are frequent in the spring and summer, while tropical storms are occasional.
Flooding occasionally occurs in the spring season due to heavy rainfall and melting of the deep snow cover. The central and western divisions frequently record " mm of snowfall during the winter. Boston recorded its snowiest winter in , with " Nor'easters bring a heavy amount of snow and precipitation in the winter. The Blizzard of February , deposited January is usually the coldest month of the year in Massachusetts as the temperatures drop to the trough of the year.
January is the snowiest month of the year, with an average of 15" mm to 20" mm of snow statewide. Even the cruise season takes a hit as Cape Cod, and the offshore islands receive up to 7" The skiing season is at its peak as the rugged mountain slopes shine with powdery snow. The numbing cold makes it mandatory to wear warm winter coats such as those of the Nanooks of the north. Strong winds and bitter cold make the winters dreary as the roads become routinely impassable amid poor visibility, ice, and snow in Massachusetts in January.
February sees dark skies in Massachusetts , with no respite from the severe cold. The snowfall is substantial, with Worthington in the central region recording up to 18" The sun is absent regularly as dark clouds cover the skies.
The severe cold makes it challenging to step outside, as snow blowers and snow plows regularly clear the pavements, driveways, and roads. A warm burst can give a pleasant surprise during the winter briefly, but the majority of the days are cold and dark in the absence of intense sunshine. Stack fuel for generators, batteries, and food as storms can cause major power outages.
Locals enjoy ice skating, snow tubing, skiing, and other activities at the slightest opportunity of warmth. Watch out for snowstorms in February in Massachusetts. March is cold in Massachusetts with the signs of spring by the second half of the month. March is rainy to the tune of 4" The snowfall registers between 5" mm to 15" mm in many places and provides grounds for snow activities in early spring.
The icy Nashoba Valley attracts snow lovers incessantly. Maple sugaring season begins in March, which also sees an uptick in fishing and kayaking activities. The roads and trails form a combination of white, black, brown, and occasionally green colors. The mixing of severely cold air from the Arctic, the warm and humid air from the Gulf of Mexico, and the cold air from the North Atlantic shores bring unpredictable weather and frequent storms.
March asks for layered clothing in Massachusetts to withstand the chilly conditions. April is wet in Massachusetts as the advance of the spring seasons brings warm days and cold nights. Early tourists receive significant discounts on a visit to Cape Cod and the offshore islands but have to bear damp and cold days. The snowfall is light up to 4" The predominant average hourly wind direction in Boston is from the west throughout the year.
Boston is located near a large body of water e. This section reports on the wide-area average surface temperature of that water. The average water temperature experiences significant seasonal variation over the course of the year. The time of year with warmer water lasts for 3. The time of year with cooler water lasts for 3. To characterize how pleasant the weather is in Boston throughout the year, we compute two travel scores. Based on this score, the best time of year to visit Boston for general outdoor tourist activities is from late June to mid September , with a peak score in the last week of August.
Based on this score, the best time of year to visit Boston for hot-weather activities is from early July to mid August , with a peak score in the last week of July. For each hour between AM and PM of each day in the analysis period to , independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies. Our precipitation score , which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0. The growing season in Boston typically lasts for 7. Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature.
Based on growing degree days alone, the first spring blooms in Boston should appear around April 23 , only rarely appearing before April 7 or after May 5. This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents.
Shortwave radiation includes visible light and ultraviolet radiation. The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3. The brightest month of the year in Boston is June , with an average of 6. The darker period of the year lasts for 3. The darkest month of the year in Boston is December , with an average of 1.
For the purposes of this report, the geographical coordinates of Boston are The topography within 2 miles of Boston contains only modest variations in elevation, with a maximum elevation change of feet and an average elevation above sea level of 10 feet.
Within 10 miles contains only modest variations in elevation feet. Within 50 miles contains significant variations in elevation 2, feet. This report illustrates the typical weather in Boston, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, to December 31, There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Boston.
For each station, the records are corrected for the elevation difference between that station and Boston according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Boston is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Boston and a given station. To get a sense of how much these sources agree with each other, you can view a comparison of Boston and the stations that contribute to our estimates of its temperature history and climate.
Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data. All data relating to the Sun's position e. This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a kilometer grid.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database. Time zones for airports and weather stations are provided by AskGeo. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose.
Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series.
While having the tremendous advantages of temporal and spatial completeness, these reconstructions: 1 are based on computer models that may have model-based errors, 2 are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and 3 have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. Please review our full terms contained on our Terms of Service page.
You're permitted to use this graph as long as you provide prominent attribution with a link back close to the use of the graph. For print usage, please acquire a license. Full Year. Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature.
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents.
Shortwave radiation includes visible light and ultraviolet radiation. The average daily incident shortwave solar energy in Boston is decreasing during October, falling by 1. For the purposes of this report, the geographical coordinates of Boston are The topography within 2 miles of Boston contains only modest variations in elevation, with a maximum elevation change of feet and an average elevation above sea level of 10 feet.
Within 10 miles contains only modest variations in elevation feet. Within 50 miles contains significant variations in elevation 2, feet. This report illustrates the typical weather in Boston, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, to December 31, There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Boston. For each station, the records are corrected for the elevation difference between that station and Boston according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Boston is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Boston and a given station. To get a sense of how much these sources agree with each other, you can view a comparison of Boston and the stations that contribute to our estimates of its temperature history and climate.
Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data. All data relating to the Sun's position e. This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a kilometer grid. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database.
Time zones for airports and weather stations are provided by AskGeo. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects.
We assume no responsibility for any decisions made on the basis of the content presented on this site. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series.
While having the tremendous advantages of temporal and spatial completeness, these reconstructions: 1 are based on computer models that may have model-based errors, 2 are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and 3 have particular difficulty with the weather in some coastal areas, especially small islands. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.
Please review our full terms contained on our Terms of Service page. You're permitted to use this graph as long as you provide prominent attribution with a link back close to the use of the graph.
For print usage, please acquire a license. Full Year. Spring Summer Fall Winter. History:
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